kewlmike

My rear a/c on a 05 suburban doesnt blow cold,I think its a door or valve on the heater side..Front works fine...any thoughts?
Thanks

01WS6/tamu

iTrader: (37)

Crawl underneath on the passenger side rear with the engine running and the front a/c on high blower and full cold. Grab the suction line it's the large one and see if it's cold and sweating. If it's warm or just barely cool chances are the expansion valve in the rear a/c unit stuck closed. This will be right behind the the right rear wheel straight up under the quarter panel area.